its a hectoctagon
A ceptagon
A megagon.
generally, with polygons with more than 12 sides, mathematicians just say number-gons, so a shape with 170 sides is a One-hundred seventy-gon.
the radius
A polygon that has 209 diagonals will have 22 sides and it's perfectly acceptable to call it a 22-agon.
Each interior angle of a regular polygon has a measure that is equal to one hundred and eighty degrees times two less than the number of sides in the polygon.
Presumably, that would be a polygon with a hundred sides. Although it would probably be understood if you used it, "centi-" really means "one-hundredth" rather than "one hundred," so it would be better to call such a figure a "hectogon."
There is no polygon with one side.
There is not a name for such a polygon. A polygon with one million sides is called a megagon though..
A polygon is made of sides.
Just like a triangle is a polygon with 3 sides, A Quadrilateral(quad) is a polygon with 4 sides. Pentagon is a polygon with 5 sides and hexagon is one with 6 sides.
megagon (hecatomyriagon)